Scope This instrument conforms to sh / t0093 and astm d2276 m1l-t-5624n standards. It can detect contaminants propellant solid particles. Under specified conditions, the samples were filtered glass sand core filtration devices, increase the weight on the microporous membrane filters is the total sample contaminants. Features 1, the instrument for the desktop, stainless steel control panel, ceramic coating; 2, digital timer, fengming alarm; 3, the evacuation time can be set arbitrarily; 4, low noise pump; 5, the standard glass fittings, conforming to astm standards; 6, using molding and metal clamp; Technical parameters 1. Filter: vacuum pumping 2, vacuum degree: 80kpa 3, machine power: 500w 4, the working units: a standard filtration system 5 power supply: ac220v / 50hz 6. Timing: digital timer
Fds-1401 petroleum wax penetration tester Scope Petroleum wax penetration tester applies gb/t4985-84 "petroleum wax needle penetration assay", also applies to astm-d1321 "petroleum wax needle penetration test" and iso3992 "petroleum wax needle penetration test". Petroleum wax penetration test is a multipurpose common type, with automatic control devices and with a special needle into the standard petroleum wax pieces. It can be petroleum wax penetration test, with the relevant standards penetration member, it can also be used to verify the test substance and cheese, sugar gum, butter, cream, fermented solid body, fine powders of colloidal, freeze the like other food raw materials. Features 1, the time controller with digital display, control time range: 0 to 9 minutes and 59 seconds, accuracy: ± 0.1 seconds. 2, the digital display depth measuring mechanism, easy to use, good repeatability, high accuracy. 3, the maximum measurable penetration value of not less than 620, can adapt to various test requirements. 4, stents were pointed needles move quickly and fretting two easy alignment of the test operation of the sample surface. 5, stand there with even self-locking function can be securely anchored anywhere. 6, with the table horizontal adjustment mechanism, easy to adjust. 7, with a manual release mechanism of the penetration member, when not in use to ensure that the release time of the automatic control, able to operate normally. Technical parameters 1, power: ac220v ± 10% 50hz 2, input power: 1000w 3, timing range: 0.01 ~ 99.99s 4, delay control accuracy: = 0.3% ± 0.05s
Scope Asphalt ash analyzer in accordance with the requirements of the standard sh/t0422 designed and manufactured for the determination of ash content in the asphalt. Features 1. With integrated design, easy operation and maintenance; 2. With pid temperature control temperature control, high precision, and stable; 3. Asphalt ash analyzer using ceramic fiber materials, better insulation. Technical parameters 1. Power supply: ac220v ± 10%; 50hz; 2. Furnace (heater) heating power: 2400w; 3. Furnaces (box furnace): heating temperature 900 ± 25 °c, rated power 2500w; 4. Heating method control: manual control switch; 5. Ceramic crucible: 50ml, 100ml.
Scope Application range: the engine coolant corrosion tester specifically designed and manufactured according to the standard astm d1348 and sh / t 0085. Provides for glassware, corrosion of engine coolant typical metal specimens was measured in the laboratory under controlled conditions. Features 1. Integrated design, simple operation; 2. Automatically prompt overflow design, full of water; 3. Rapid sealing valve design, to facilitate the replacement of the bath; 4. Engine coolant corrosion tester test cup quick plug design, fast, stable, safe; 5. Using the precision flow meter control flow, the user at any time adjustable; 6. With professional air pump gas supply, stable airflow, noise-free; 7. Embedded drying system, replacement desiccant convenient, beautiful. Technical parameters 1. Input power: 220v ± 10% 50hz; 2. Heating power: 2000w; 3. The heating medium: glycerin (glycerol), or a flash point greater than 100 ° c heating oil; 4. Test holes: 4 holes; 5. Time: automatic timing; 6. Ambient temperature: 5 to at 35 ° c; 7. Relative humidity:
Scope Grease evaporation tester applied standards: sh/t0337. The instrument is suitable for the determination of grease evaporation. When used to hold a certain amount of grease evaporating dish, placed inside a special thermostat at a predetermined temperature for 1h, the mass loss was measured. Features 1. Heated steel cake bs80 × 10mm surface of a recess of a thermometer inserted; 2. Six steel evaporating dish 22 × 1 × 0.3 × 1mm engraved mark number; 3. The spring thimble using leveraged, the operation is very light; 4. Electric hot plate heating method and no fire; 5. Varnish has formed at the bottom of intake; 6. High temperature resistant glass viewing window; 7. Microcomputer temperature controller, digital display, precision ± 1 °cpt100 sensor; 8. Digital timer, recording test time. Technical parameters 1. Applied standards: sh/t0337; 2. Timing mode : digital timer; 3. Heating method : electric hot plate heating method ; 4. Total power: 500kw; 5. Temperature control: digital pid temperature controller; 6. Mounting: spring thimble; 7. Measuring range: room temperature ~ 400 °c± 1 °c; 8. Power supply: ac220v/50hz.
Scope Applicable standards: sh / t0068 astm d1122 The instrument with the state standards and the american society for testing and materials standards development, measured by density meter and engine coolant concentrate density or relative density instrument using split structure, convenient operation, greatly improving the work efficiency. Features 1. Engine coolant density meter uses the integrated design, easy operation and maintenance; 2. Engine coolant density meter with pid temperature control and high precision, stable; 3. Engine coolant density meter uses imported compressor refrigeration, cooling capacity, no noise; 4. Engine coolant density meter uses the results of the double bomb, to facilitate the operation of parallel experiments. Technical parameters 1. Digital thermostat: 20 °c± 0.2 °c; 2. Cooling: compressor cooling; 3. Heating: electric tube heating; 4. Mixing method: motor agitation; 5. The kind of unit: two holes; 6. Power: ac220v/50hz.
Scope Engine oil apparent viscosity analyzer applicable standards: gb / t6538 astm d5293 low dynamic viscosity index of the engine oil, the main test instrument, the use of modern advanced technology, mechanical, optical electronics and computer technology, and temperature measurement, temperature control. Temperature accuracy and stability. Engine oil apparent viscosity analyzer reasonable structure, stable performance, simple operation, is the ideal detection equipment. Features 1, engine oil apparent viscosity analyzer using the lcd screen display, man-machine interface friendly exchanges. 2, the engine oil apparent viscosity analyzer configured automatic diagnosis system, automatic fault prompts. 3, the engine oil apparent viscosity analyzer uses flanders brand speed control system and imported motor drive, to a great extent on the stability of the driving current stable and precise control drive motor speed, more accurate results. 4, the engine oil apparent viscosity analyzer automatically corrects the speed control system configuration system, automatic viscosity correction system, automatic calibration function curve system. 5, engine oil apparent viscosity analyzer smart operating system, the user simply one-button operation, automatic heating equipment, automatic timing, automatic calculation, automatic thermostat, automatic save results automatically print the report. Technical parameters 1, cooling mode: imported compressor refrigeration 2, temperature range: room temperature ~ -35 ± 0.1 ? 3, circular way: imported low temperature cycle pump drive 4, the temperature control: temperature control system microcontroller 5, the drive motor: imported motor 6, display: lcd 7, the correction method: standard oil correction 8 power supply: ac220v ± 10% 50hz
Scope Applicable standards: astm d6082 sh / t0722 High temperature lubricant foaming characteristics tester for testing the lubricant foaming characteristics at 150 ? when. The samples were heated to 49 ?, cooled to room temperature after 30min constant temperature, the sample was then transferred to a specified cylinder, and heated to 150 ?, diffusion into the metal head through the drying air, ventilation 5min, aeration is stopped immediately before the determination of the static static amount of foam amount of foam, the foam volume and movement after stopping ventilation predetermined time, the time and the total volume of the foam disappears percentage increase. Features 1, the instrument for the split, including heating bath and precise flowmeters. 2, high temperature resistant borosilicate glass cylinder, f300 × 450mm, meet the standard requirements; 3, environmentally friendly heating oil bath, to reduce soot on the human body injury, efficient heat insulation effect; 4, stainless steel heater; 5, the air filter with glass wool; 6, microprocessor thermostat and pid control, digital display the temprature, accuracy 0.1 ?, pt100 rtd temperature probes; Technical parameters 1. Temperature control mode: pid digital temperature controller import 2, temperature control accuracy: ± 0.1 ? 3, the heating method: heating oil bath 4, the whole power: 2.5kw 5, work unit: 2 6, the flow control: precision flowmeter 7, power supply: ac220v / 50hz 8, temperature range: 150 ± 0.1 ?
Scope Petroleum products motion detector according to national standards gb / t265 regulations designed and manufactured for the determination of kinematic viscosity of liquid petroleum products. English lcd screen display, interactive interface, preset temperature, test time and other parameters menu prompts input, design aesthetic appearance, is the introduction of new instruments. Features 1, the lcd screen english display, interactive interface, preset temperature, test time and other parameters, menu prompts input 2, the actuator using advanced ssr, which is characterized by non-contact, no action noise, no spark, vibration resistance, long life. 3, bath heater and draft tube internal parts such as the use of stainless steel, corrosion-resistant and durable. 4, automatic calculation and testing of the capillary constant time average of the product; the high precision temperature control, good accuracy. 5, the introduction of imported xecom us data processing chip, fast and accurate data processing 6-cylinder design, better insulation and protective measures 7, automatic countdown function, automatic calculation results Technical parameters 1, the control temperature settings: room temperature ~ 100 ? 2, the number of samples: 2 3, constant temperature accuracy: ± 0.1 4. Display: lcd 5, results processing: automatic calculation of results 6. Countdown: automatic countdown 7, heater power: 1000w 8, work power source: 220v ± 10% 50hz 9, ambient temperature: room temperature ~ 35 ? 10, weight: 25kg
Scope This instrument with atmel microprocessor core, mechanical, optoelectronic, electrochemical and micro-detection technology in one, using the most advanced digital optical detection system, automatic completion determining transformer oil acid value, the experimental results to standardize the format automatically printouts. The instrument reasonable structure, stable performance, simple operation, is an ideal detection equipment. Features 1, the instrument is fully in accordance with gb / t7599-87 standard design and development, for domestic initiative, can accurately detect transformer oil, turbine oil, fuel oil and other petroleum products, anti-acid number of automatic test equipment. 2, no manual weighing just a sample placed in a specimen cup, the device will automatically injections, heated to reflux, determined to exclude waste, print the results display and other operations, reduce operator exposure sample and reagent, maximize the protection of their personal safety. 3, measurement instrument automatically deducted ethanol indicator background value and the background value, the result is more accurate. 4, instrument calibration instrument equipped with standard acid and calibration procedures, the user can at any time and in liquid instruments and calibration, and the solution used to overcome the changes in the concentration of defects and improve the reliability of test results. 5, the start time can be measured from 1 to 3 samples, easy to use, high efficiency 6, automatic detection end of the experiment: the color indicator measurement, automatic detection of the end of the color (color value can be set), and the same human judgment. (recognizes three indicator) Technical parameters 1, applies to gb / t7599-87, gb / t264-83 standard. 2, the test range: 0.002 ~ 1mg koh / g 3, the measurement error: = ± 0.005 mg koh / g 4. Repeatability: =0.005 mg koh / g 5, temperature: 10 ? ~ 45 ? 6, for humidity:
Scope Automatic high-temperature high-shear viscosity meter were measured and the apparent viscosity of the lubricant at high temperature and high shear rates, the test principle is at 150 ? test conditions, under nitrogen (carbon dioxide) pressure, the sample from the capillary viscosity meter flow, and pressure from the flow time of the sample, obtained apparent shear rate capillary viscometer reaches a certain apparent viscosity, with each pool viscometer calibration curve corresponding to the measured pressure of the oil viscosity. Features 1, high-temperature high-shear viscosity automatic analyzer for domestic initiative, the key components used by the us cn accessories to ensure product quality; 2, automatic high-temperature high-shear viscosity meter with digital display of pressure and time, more intuitive controllable; 3, high-temperature high-shear viscosity automatic analyzer using flanders dedicated high shear viscosity calculation software prompts, easy to learn; 4, there is a stopcock automatic high temperature and high shear viscosity of each sample tube detector, in line with the standard requirements; 5, automatic high-temperature high-shear viscosity analyzer configured with ftc circuit protection devices, over-temperature automatically cut off power; Technical parameters 1. Applicable standards: astm d5481 sh / t0703 2, heating: electric heating rods 3, temperature range: room temperature ~ 150 ? 4. Determination of the viscosity range: 0.5-8mpa.S@150c 5, the control pressure range: 3.5kgf / cm2 ~ 35kgf / cm2 6, sample capacity: 10 ml 7, pressure display: digital pressure gauge 8, the time display: digital schedule 9, the result of the calculation: friend’s dedicated calculation software 10, power supply: ac220v 50hz
Scope Automatic high-temperature high-shear viscosity meter were measured and the apparent viscosity of the lubricant at high temperature and high shear rates, the test principle is at 150 ? test conditions, under nitrogen (carbon dioxide) pressure, the sample from the capillary viscosity meter flow, and pressure from the flow time of the sample, obtained apparent shear rate capillary viscometer reaches a certain apparent viscosity, with each pool viscometer calibration curve corresponding to the measured pressure of the oil viscosity. Features 1, high-temperature high-shear viscosity automatic analyzer for domestic initiative, the key components used by the us cn accessories to ensure product quality; 2, automatic high-temperature high-shear viscosity meter with digital display of pressure and time, more intuitive controllable; 3, high-temperature high-shear viscosity automatic analyzer using flanders dedicated high shear viscosity calculation software prompts, easy to learn; 4, there is a stopcock automatic high temperature and high shear viscosity of each sample tube detector, in line with the standard requirements; 5, automatic high-temperature high-shear viscosity analyzer configured with ftc circuit protection devices, over-temperature automatically cut off power; Technical parameters 1. Applicable standards: astm d5481 sh / t0703 2, heating: electric heating rods 3, temperature range: room temperature ~ 150 ? 4. Determination of the viscosity range: 0.5-8mpa.S@150c 5, the control pressure range: 3.5kgf / cm2 ~ 35kgf / cm2 6, sample capacity: 10 ml 7, pressure display: digital pressure gauge 8, the time display: digital schedule 9, the result of the calculation: friend’s dedicated calculation software 10, power supply: ac220v 50hz
Scope Applied standards: gb/t2539, astm d87, iso3841 Features 1. With integrated design, easy operation and maintenance; 2. With pid temperature control, high precision, stable; 3. With automatic chronograph, alarm system ; 4. With double elastic, easy to operate parallel experiments. Technical parameters 1. Applied standards: gb/t2539 iso2707; 2. The temperature control means: quantity pid temperature controller; 3. Work: two holes; 4. Power supply: ac220 ± 50% 50hz; 5. Total power: 300w
Scope UV fluorescence sulfur analyzer is based on UV fluorescence measurement principle and the development of computer technology combined with a new generation of precision instruments, is currently the most advanced of the total sulfur content tester, in line with ASTM D5453, SH / T 0689 and other standards, the instrument is National total sulfur content of refined oil arbitration standards. Now widely used in the determination of total sulfur content of crude oil, hydrocarbons and fuel, petroleum, plastics, petrochemicals, food and so on. Measurement principle instrument uses ultraviolet fluorescence method, when the sample is introduced into the pyrolysis furnace, cracking occurred sample oxidation of sulfide which quantitatively converted to sulfur dioxide, carried by a carrier gas, off which the water through a membrane dryer, into the reaction chamber, sulfur dioxide absorbing ultraviolet light energy into an excited state of sulfur dioxide (SO2 *), the fluorescence emission of sulfur dioxide when SO2 * to return to a stable state, the energy released by a photomultiplier tube to receive, and then the micro-current amplifier, computer data processing, the amount of reaction with sulfur dioxide emission intensity is proportional to the amount of sulfur dioxide and total sulfur content in the sample is proportional, so the content of the sample can be determined by measuring total sulfur emission intensity. Features 1, computer-controlled operation, enabling interactive, data, peak shape can be automatically stored print. 2, the operating software can be connected with LIMIS system, automatic data transmission. 3, the instrument uses the new quartz pyrolysis tube, the injection volume can be increased to reduce measurement errors, increase the sensitivity of the instrument, higher repeatability. 4, cooling fans, automatic switch, eliminating the need to wait for the shutdown to finish samples trouble, saving time and effort. 5, darkroom system uses the latest technology, the key components imported detecting element to improve the detection accuracy and sensitivity of the instrument. 6, equipment imported membrane dryer to absorb , eliminating the need to frequently replace magnesium perchlorate of trouble, while reducing the leakage problem. 7, using computer control of temperature, improve the instrument precision temperature control, and difficult to over-temperature. 8, using air instead of water cooling, saving water resources. 9, can be adjusted to take existing calibration curve calibrated using a standard sample after sample analysis. Technical Parameters 1, in line with standards: ASTM D5453, SH / T 0689 and other standards 2, measuring range: 0.2mg / L ~ 10000mg / L ~ percentage 3. Air source: Argon: 99.999% Oxygen: 99.999% 4, sample status: solid, liquid, gas (with corresponding injector) 5, temperature range: room temperature ~ 1100 ? ± 3 ? 6, repeatability error: 0.2mg / L=X
Features 1, the oil cup conforms to the standard GB/T5654-2007 three electrode structure, the inter electrode spacing is 2mm, it can eliminate stray capacitance and the effect of leakage on the dielectric dissipation test results. It has oil discharge electromagnetic switch, the operator can remove the sample oil from oil cup under the condition of don’t remove the oil cup, and can clean the oil cup with sample oil. 2, the instrument uses induction heating, PID temperature control algorithm. The heating mode has the advantages of oil cup and heating body non-contact, heat evenly, fast, and easy to control the temperature strictly controlled within the preset temperature error range. 3, the internal standard capacitor is the SF6 inflatable three electrode type capacitor. The dielectric dissipation and capacitance of the capacitor are not affected by the ambient temperature and humidity. The precision of the instrument is guaranteed after long time use. 4, AC test power supply using AC-DC-AC conversion, which can effectively avoid the influence of mains voltage and frequency fluctuation on the accuracy of dielectric dissipation test. Even if the generator is generating electricity, the instrument can run correctly. 5, this instrument has a perfect protection function. When there is over-voltage, over-current, high voltage short circuit, the instrument can quickly cut off the high pressure, and issue a warning message. When the temperature sensor fails or is not connected, a warning message is issued. In the medium frequency induction heating furnace with limit temperature relay, when the temperature exceeds 120 degrees, the relay release, heating stop. 6, test parameter setting is convenient. The temperature setting range is 0 ~ 125 ?, the AC voltage setting range is 500 ~ 2200V, and the DC voltage setting range is 0 ~ 500V. 7, the instrument uses a large-screen LCD display, with backlight, clear display and so on. Friendly man-machine interface, just follow the English menu prompts, enter the command, the instrument can be automatically tested. And automatically store and print test results. 8, this instrument has a real-time clock, test date and time can be saved with the test results, display and print. 9, this instrument has an empty electrode cup calibration function. It can measure the capacitance of the empty electrode cup and dielectric dissipation factor to determine the cleaning and assembly of empty electrode cups. Calibration data is automatically saved for accurate calculation of relative permittivity and DC resistivity.
FDR-3301 UV fluorescence sulfur analyzer Scope UV fluorescence sulfur analyzer is based on UV fluorescence measurement principle and the development of computer technology combined with a new generation of precision instruments, is currently the most advanced of the total sulfur content tester, in line with ASTM D5453, SH / T 0689 and other standards, the instrument is National total sulfur content of refined oil arbitration standards. Now widely used in the determination of total sulfur content of crude oil, hydrocarbons and fuel, petroleum, plastics, petrochemicals, food and so on. Measurement principle instrument uses ultraviolet fluorescence method, when the sample is introduced into the pyrolysis furnace, cracking occurred sample oxidation of sulfide which quantitatively converted to sulfur dioxide, carried by a carrier gas, off which the water through a membrane dryer, into the reaction chamber, sulfur dioxide absorbing ultraviolet light energy into an excited state of sulfur dioxide (SO2 *), the fluorescence emission of sulfur dioxide when SO2 * to return to a stable state, the energy released by a photomultiplier tube to receive, and then the micro-current amplifier, computer data processing, the amount of reaction with sulfur dioxide emission intensity is proportional to the amount of sulfur dioxide and total sulfur content in the sample is proportional, so the content of the sample can be determined by measuring total sulfur emission intensity. Features 1, computer-controlled operation, enabling interactive, data, peak shape can be automatically stored print. 2, the operating software can be connected with LIMIS system, automatic data transmission. 3, the instrument uses the new quartz pyrolysis tube, the injection volume can be increased to reduce measurement errors, increase the sensitivity of the instrument, higher repeatability. 4, cooling fans, automatic switch, eliminating the need to wait for the shutdown to finish samples trouble, saving time and effort. 5, darkroom system uses the latest technology, the key components imported detecting element to improve the detection accuracy and sensitivity of the instrument. Technical Parameters 1, in line with standards: ASTM D5453, SH / T 0689 and other standards 2, measuring range: 0.2mg / L ~ 10000mg / L ~ percentage 3. Air source: Argon: 99.999% Oxygen: 99.999% 4, sample status: solid, liquid, gas (with corresponding injector) 5, temperature range: room temperature ~ 1100 ? ± 3 ? 6, repeatability error: 0.2mg / L=X
Scope Ph meter is a digital display ph meter, which uses blue backlight, double digital display, can display the ph value, temperature value or potential (mv) values. The instrument applies to universities, research institutes, environmental monitoring, industrial and mining enterprises and other departments of the laboratory sample to measure the ph of the aqueous solution and the potential (mv) values, coupled with the orp electrode measurable solution orp (oxidation - reduction potential) values , coupled with ion-selective electrode to measure the value of the electrode potential of the electrode. Features 1. Ph meter with lcd, english operation interface; 2. Ph meter using microcontroller automatic control experiment without human duty; 3. Ph meter assay changes in various parameters, automatic test results; 4. Ph meter has a self-diagnostic function, suggesting operating functions. Technical parameters 1. Instrument level: 0.01 2. Measuring range: ph 0.00 ~ 14.00ph; mv 0 ~ ± 1400mv 3. Resolution: 0.01ph. 1mv. 0.1 ? 4. Temperature compensation range: 0 ~ 60 ? 5. Electronic unit basic error: ph ± 0.05ph; mv ± 1% (fs) 6. Basic instrument error: ± 0.1ph 7. Electronic unit input current: less than 1 × 10 - 11 a 8. Electronic unit input impedance: not less than 3 × 10 11 o 9. Electronic unit repeatability error: ph 0.05ph; mv 5mv 10. Instrument repeatability error: not more than 0.05ph
Scope According to the people's republic of china national standard gb / t 1792 requirements "mercaptan sulfur distillate fuels assay (potentiometric titration)" under the design and manufacture suitable for measuring the content is within 0.0003 ~ 0.01% (m / m) range, no hydrogen sulfide jet fuel, gasoline, kerosene and light diesel mercaptan sulfur. Features 1, the liquid crystal display, english operation interface, can display information about the test parameters and measurement results 2, with pre-titration, preset endpoint titration, blank titration or manual titration functions, and can generate special titration mode according to user habits 3, the choice of different electrodes can be: acid-base titration, redox titration, precipitation titration, complexometric titration, and other non-aqueous titration and ph measurement 4, stirring system uses pwm modulation technology, software speed, low noise 5, perchloric acid titration system using anti-corrosive materials, can be a variety titration Technical parameters The instrument level: 0.05 1, measuring range: Ph: (0.00 ~ 14.00) ph Mv: (- 1800 ~ 1800.0) mv Temperature: (- 5.0 ~ 105.0) ° c 2, resolution: Ph: 0.01ph Mv: 0.1mv Temperature: 0.1 ° c 3, the basic error: Ph: ± 0.01ph ± 1 word Mv: ± 0.03% fs Temperature: ± 0.3 ° c ± 1 word 4, burette capacity tolerance: 10ml burette: ± 0.025ml 20ml burette: ± 0.035ml 5, burette resolution: 10ml burette: 1/10000 20ml burette: 2/10000 6, burette infusion or infusion rate: (50 ± 10) s (buret full degrees) 7, titration analysis repeatability: 0.2% Titration control sensitivity: ± 2 mv 8, stability: (± 0.3mv ± 1 word) / 3h 9, power source: ac (220 ± 22) v, (50 ± 1) hz 10 dimensions (mm): 340 × 400 × 400 11, instrument weight: 10 kg
Scope Engine coolant freezing point tester in accordance with the national standard gb / t2430 "determination of the freezing point of jet fuel, " requires the state petroleum and chemical industry standard sh / t0090 "engine coolant freezing point determination" provides design and manufacture. Choose a different configuration, measuring jet fuel, engine coolant concentrate its freezing point and other indicators may be used separately, is a multi-purpose freezing point tester. Features 1. Double vacuum glass observation window, real-time observation of samples during operation; 2. Using imported compressor refrigeration the cascade technology can reach -70 ° cold bath, noise; 3. Using pid control techniques, temperature control, temperature control accuracy of ± 0.5 °c4, engine coolant freezing point tester using state-of 4. The art electromagnetic stirring, no noise, low failure rate, is the preferred alternative to the traditional mechanical agitation. Technical parameters 1. Power supply: ac 220v ± 10%; 50hz; 2. Work the cold tank: stainless steel cold tank, double vacuum glass viewing window; 3. Cold trough temperature: +20 °c~ -70 °c; 4. Temperature accuracy: ± 0.5 °c; 5. Bath agitation: automatic stirring motor, power 6w, 1200r / m; 6. Refrigeration system: new refrigeration compressor; 7. Sample stirring: electromagnetic stirring, 0 to 120 beats / minute, continuously adjustable; 8. Ambient temperature: 30 °c; 9. Relative humidity: 85%; 10. Total power consumption: not more than 2000w.
